Home / 20,939.55-28,892.46-12,444.27

Finding the Fourth Proportional to 20,939.55, 28,892.46 and 12,444.27

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Solution

The fourth proportional to 20,939.55, 28,892.46 and 12,444.27 is: 17,170.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,939.55 : 28,892.46 = 12,444.27 : x
  2. Step 2: Convert to fraction form
    20,939.55/28,892.46 = 12,444.27/x
  3. Step 3: Cross multiply
    20,939.55x = 28,892.46 × 12,444.27
  4. Step 4: Simplify right side
    20,939.55x = 359,545,573.20
  5. Step 5: Solve for x
    x = 359,545,573.20/20,939.55
  6. Step 6: Final answer
    x = 17,170.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.